The cooperative research project RegInnB investigates how "acceleration" is understood and operated in regional accelerators for innovation and regional development. The project combines the classical collection of qualitative data with the implementation of so-called "cocreation workshops". Such workshops offer a platform for constructive exchange between representatives of accelerators, experts from accelerator research and students in the field of management and entrepreneurship. This collaborative approach enables the creation of knowledge about the accelerator concept, which is anchored in research, teaching and practice.